ISLAND NIGHTMARE: Darrelle Revis rides to the locker room on a golf cart after injuring his knee in the third quarter. The Jets fear he tore his ACL, which would end his season. Photo: Anthony J. Causi

MIAMI — The Jets left here hoping for the best but preparing for the worst.

All-Pro cornerback Darrelle Revis is scheduled to undergo an MRI exam in New York this morning after injuring his left knee late in the third quarter of Gang Green’s 23-20 overtime win against the Dolphins at Sun Life Stadium.

Team sources said they fear Revis suffered a torn anterior cruciate ligament, which would end his season, but the Jets are hoping it’s no worse than a torn medial collateral ligament, which isn’t nearly as serious.

“Clearly with Darrelle — your best player — of course, you’re going to be concerned,” Rex Ryan said outside an otherwise jubilant Jets locker room. “I don’t know anything about it right now.”

If the Jets’ worst fears are realized, it would mark Revis’ first significant absence since arriving in the NFL in 2007. He had missed a total of three games in that span due to hamstring problems and a concussion.

Revis’ leg buckled as he tried to avoid an oncoming block while chasing a short pass from Dolphins quarterback Ryan Tannehill to running back Daniel Thomas with 3:54 left in the third.

Revis — who missed last week’s loss at Pittsburgh after suffering the first concussion of his football career in Week 1 — was able to get to the sidelines, but he had to be taken to the locker room on a golf cart and was not with his teammates after the game.

The Dolphins immediately picked on Revis’ replacement, Kyle Wilson, with some success. The Jets’ No. 1 pick in 2010 still shows a distressing lack of awareness when the ball is in the air, and Wilson picked up a crucial pass-interference call in the fourth quarter that enabled Miami to kick a field goal and force OT.

Wilson represents a Grand Canyon-sized dropoff in talent from Revis, who is considered by far the best corner in the game, but Revis’ teammates didn’t appear panicked about it.

“It’s huge, but I wouldn’t necessarily call it devastating,” outside linebacker Calvin Pace said. “We’ve got enough guys who have played. At the end of the day in this league, it’s just the next-man-up mentality.

“I hope it’s nothing serious, but if he can’t play, then it’s got to be Kyle or Ellis [Lankster] or whoever,” Pace added. “We’ve just got to keep moving because we do have some opponents with some serious weapons.”

Wilson, who would move up from his nickel role to starter opposite Antonio Cromartie, was downbeat about his mentor Revis’ injury but welcomed the chance to prove himself.

“If Darrelle can’t go, it’s an opportunity for a lot of playing time and to get in there and really show what I can do,” Wilson said. “That’s something any cornerback in this league wants. I’ll be excited if it comes to that.”

Wilson will have to pardon the Jets if they don’t quite feel the same.